I run a 24bit/192kHz signal from my computer to a Benchmark DAC1. The balanced outputs then go to a Genelec 7070A sub (110 lbs that can pump out >117dB between 19-85Hz). The sub then sends everything over 85Hz to a pair of Genelec 8040A powered studio monitors (a standard in the recording industry). In the evenings I listen to my Sennheiser HD600s with a Cardas replacement cables.